10 files changed, 82 insertions, 42 deletions

diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index e7ccf7e..dd00f74 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -54,5 +54,6 @@ endif
 
 head-y			:= head$(MMUEXT).o
 obj-$(CONFIG_DEBUG_LL)	+= debug.o
+obj-$(CONFIG_EARLY_PRINTK)	+= early_printk.o
 
 extra-y := $(head-y) init_task.o vmlinux.lds
diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
index 0e62770..8214bfe 100644
--- a/arch/arm/kernel/armksyms.c
+++ b/arch/arm/kernel/armksyms.c
@@ -48,27 +48,7 @@ extern void __aeabi_uidivmod(void);
 extern void __aeabi_ulcmp(void);
 
 extern void fpundefinstr(void);
-extern void fp_enter(void);
 
-/*
- * This has a special calling convention; it doesn't
- * modify any of the usual registers, except for LR.
- */
-#define EXPORT_CRC_ALIAS(sym) __CRC_SYMBOL(sym, "")
-
-#define EXPORT_SYMBOL_ALIAS(sym,orig)		\
- EXPORT_CRC_ALIAS(sym)				\
- static const struct kernel_symbol __ksymtab_##sym	\
-  __used __attribute__((section("__ksymtab"))) =	\
-    { (unsigned long)&orig, #sym };
-
-/*
- * floating point math emulator support.
- * These symbols will never change their calling convention...
- */
-EXPORT_SYMBOL_ALIAS(kern_fp_enter,fp_enter);
-EXPORT_SYMBOL_ALIAS(fp_printk,printk);
-EXPORT_SYMBOL_ALIAS(fp_send_sig,send_sig);
 
 EXPORT_SYMBOL(__backtrace);
 
diff --git a/arch/arm/kernel/crunch.c b/arch/arm/kernel/crunch.c
index 769abe1..25ef223 100644
--- a/arch/arm/kernel/crunch.c
+++ b/arch/arm/kernel/crunch.c
@@ -51,7 +51,7 @@ static int crunch_do(struct notifier_block *self, unsigned long cmd, void *t)
 		 * initialised state information on the first fault.
 		 */
 
-	case THREAD_NOTIFY_RELEASE:
+	case THREAD_NOTIFY_EXIT:
 		crunch_task_release(thread);
 		break;
 
diff --git a/arch/arm/kernel/dma-isa.c b/arch/arm/kernel/dma-isa.c
index 0e88e46..360bb6d 100644
--- a/arch/arm/kernel/dma-isa.c
+++ b/arch/arm/kernel/dma-isa.c
@@ -207,8 +207,6 @@ void __init isa_init_dma(void)
 		outb(0x32, 0x4d6);
 		outb(0x33, 0x4d6);
 
-		request_dma(DMA_ISA_CASCADE, "cascade");
-
 		for (i = 0; i < ARRAY_SIZE(dma_resources); i++)
 			request_resource(&ioport_resource, dma_resources + i);
 
@@ -218,5 +216,7 @@ void __init isa_init_dma(void)
 				printk(KERN_ERR "ISADMA%u: unable to register: %d\n",
 					chan, ret);
 		}
+
+		request_dma(DMA_ISA_CASCADE, "cascade");
 	}
 }
diff --git a/arch/arm/kernel/early_printk.c b/arch/arm/kernel/early_printk.c
new file mode 100644
index 0000000..85aa2b2
--- /dev/null
+++ b/arch/arm/kernel/early_printk.c
@@ -0,0 +1,57 @@
+/*
+ *  linux/arch/arm/kernel/early_printk.c
+ *
+ *  Copyright (C) 2009 Sascha Hauer <s.hauer@pengutronix.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/console.h>
+#include <linux/init.h>
+
+extern void printch(int);
+
+static void early_write(const char *s, unsigned n)
+{
+	while (n-- > 0) {
+		if (*s == '\n')
+			printch('\r');
+		printch(*s);
+		s++;
+	}
+}
+
+static void early_console_write(struct console *con, const char *s, unsigned n)
+{
+	early_write(s, n);
+}
+
+static struct console early_console = {
+	.name =		"earlycon",
+	.write =	early_console_write,
+	.flags =	CON_PRINTBUFFER | CON_BOOT,
+	.index =	-1,
+};
+
+asmlinkage void early_printk(const char *fmt, ...)
+{
+	char buf[512];
+	int n;
+	va_list ap;
+
+	va_start(ap, fmt);
+	n = vscnprintf(buf, sizeof(buf), fmt, ap);
+	early_write(buf, n);
+	va_end(ap);
+}
+
+static int __init setup_early_printk(char *buf)
+{
+	register_console(&early_console);
+	return 0;
+}
+
+early_param("earlyprintk", setup_early_printk);
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index c9a8619f..b7cb45b 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -69,7 +69,7 @@ int show_interrupts(struct seq_file *p, void *v)
 	}
 
 	if (i < NR_IRQS) {
-		spin_lock_irqsave(&irq_desc[i].lock, flags);
+		raw_spin_lock_irqsave(&irq_desc[i].lock, flags);
 		action = irq_desc[i].action;
 		if (!action)
 			goto unlock;
@@ -84,7 +84,7 @@ int show_interrupts(struct seq_file *p, void *v)
 
 		seq_putc(p, '\n');
 unlock:
-		spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+		raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags);
 	} else if (i == NR_IRQS) {
 #ifdef CONFIG_FIQ
 		show_fiq_list(p, v);
@@ -139,7 +139,7 @@ void set_irq_flags(unsigned int irq, unsigned int iflags)
 	}
 
 	desc = irq_desc + irq;
-	spin_lock_irqsave(&desc->lock, flags);
+	raw_spin_lock_irqsave(&desc->lock, flags);
 	desc->status |= IRQ_NOREQUEST | IRQ_NOPROBE | IRQ_NOAUTOEN;
 	if (iflags & IRQF_VALID)
 		desc->status &= ~IRQ_NOREQUEST;
@@ -147,7 +147,7 @@ void set_irq_flags(unsigned int irq, unsigned int iflags)
 		desc->status &= ~IRQ_NOPROBE;
 	if (!(iflags & IRQF_NOAUTOEN))
 		desc->status &= ~IRQ_NOAUTOEN;
-	spin_unlock_irqrestore(&desc->lock, flags);
+	raw_spin_unlock_irqrestore(&desc->lock, flags);
 }
 
 void __init init_IRQ(void)
@@ -166,9 +166,9 @@ static void route_irq(struct irq_desc *desc, unsigned int irq, unsigned int cpu)
 {
 	pr_debug("IRQ%u: moving from cpu%u to cpu%u\n", irq, desc->node, cpu);
 
-	spin_lock_irq(&desc->lock);
+	raw_spin_lock_irq(&desc->lock);
 	desc->chip->set_affinity(irq, cpumask_of(cpu));
-	spin_unlock_irq(&desc->lock);
+	raw_spin_unlock_irq(&desc->lock);
 }
 
 /*
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index 0d96d01..6730413 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -274,17 +274,18 @@ void show_regs(struct pt_regs * regs)
 	__backtrace();
 }
 
+ATOMIC_NOTIFIER_HEAD(thread_notify_head);
+
+EXPORT_SYMBOL_GPL(thread_notify_head);
+
 /*
  * Free current thread data structures etc..
  */
 void exit_thread(void)
 {
+	thread_notify(THREAD_NOTIFY_EXIT, current_thread_info());
 }
 
-ATOMIC_NOTIFIER_HEAD(thread_notify_head);
-
-EXPORT_SYMBOL_GPL(thread_notify_head);
-
 void flush_thread(void)
 {
 	struct thread_info *thread = current_thread_info();
@@ -299,9 +300,6 @@ void flush_thread(void)
 
 void release_thread(struct task_struct *dead_task)
 {
-	struct thread_info *thread = task_thread_info(dead_task);
-
-	thread_notify(THREAD_NOTIFY_RELEASE, thread);
 }
 
 asmlinkage void ret_from_fork(void) __asm__("ret_from_fork");
diff --git a/arch/arm/kernel/smp_twd.c b/arch/arm/kernel/smp_twd.c
index a73a34d..ea02a7b 100644
--- a/arch/arm/kernel/smp_twd.c
+++ b/arch/arm/kernel/smp_twd.c
@@ -160,6 +160,7 @@ void __cpuinit twd_timer_setup(struct clock_event_device *clk)
 
 	/* Make sure our local interrupt controller has this enabled */
 	local_irq_save(flags);
+	irq_to_desc(clk->irq)->status |= IRQ_NOPROBE;
 	get_irq_chip(clk->irq)->unmask(clk->irq);
 	local_irq_restore(flags);
 
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 71151bd..4957e13e 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -65,11 +65,11 @@ SECTIONS
 	__init_end = .;
 #endif
 
-	/DISCARD/ : {			/* Exit code and data		*/
-		EXIT_TEXT
-		EXIT_DATA
-		*(.exitcall.exit)
-		*(.discard)
+	/*
+	 * unwind exit sections must be discarded before the rest of the
+	 * unwind sections get included.
+	 */
+	/DISCARD/ : {
 		*(.ARM.exidx.exit.text)
 		*(.ARM.extab.exit.text)
 #ifndef CONFIG_HOTPLUG_CPU
@@ -238,6 +238,9 @@ SECTIONS
 
 	STABS_DEBUG
 	.comment 0 : { *(.comment) }
+
+	/* Default discards */
+	DISCARDS
 }
 
 /*
diff --git a/arch/arm/kernel/xscale-cp0.c b/arch/arm/kernel/xscale-cp0.c
index 17127db..1796157 100644
--- a/arch/arm/kernel/xscale-cp0.c
+++ b/arch/arm/kernel/xscale-cp0.c
@@ -70,7 +70,7 @@ static int iwmmxt_do(struct notifier_block *self, unsigned long cmd, void *t)
 		 * initialised state information on the first fault.
 		 */
 
-	case THREAD_NOTIFY_RELEASE:
+	case THREAD_NOTIFY_EXIT:
 		iwmmxt_task_release(thread);
 		break;